首先遵守UITextView的代理
然后實(shí)現(xiàn)代理中的
- (BOOL)textView:(UITextView?*)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString?*)text{
? ??if([text?isEqualToString:@"\n"]){
? ? ? ? [textView?resignFirstResponder];
? ? ? ??return?NO;
? ? }
? ??return?YES;
}